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Finding the Fourth Proportional to 8,600.24, 12,901.08 and 3,980.72

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Solution

The fourth proportional to 8,600.24, 12,901.08 and 3,980.72 is: 5,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.24 : 12,901.08 = 3,980.72 : x
  2. Step 2: Convert to fraction form
    8,600.24/12,901.08 = 3,980.72/x
  3. Step 3: Cross multiply
    8,600.24x = 12,901.08 × 3,980.72
  4. Step 4: Simplify right side
    8,600.24x = 51,355,587.18
  5. Step 5: Solve for x
    x = 51,355,587.18/8,600.24
  6. Step 6: Final answer
    x = 5,971.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.